SmartCane/r_app/experiments/interactive_sar_visualization/README.md

Interactive SAR Visualization

This folder contains all the code and reports for Sentinel-1 SAR data analysis and visualization.

Files Overview

Core Analysis Functions

• sar_analysis_functions.R - SAR data loading, metrics calculation, field statistics
• sar_visualization.R - Interactive mapping functions using tmap
• test_sar_analysis.R - Test script for validating SAR analysis functions

Reports & Notebooks

• Interactive_SAR_Report.Rmd - Main interactive HTML report (working version)
• SAR_exploration_report.Rmd - Alternative comprehensive report
• SAR_quick_test.Rmd - Quick test report for debugging

Utility Scripts

• generate_sar_report.R - Automated report generation script
• simple_sar_test.R - Basic SAR data loading test

Data Sources

The SAR data is located in: ../../../python_scripts/data/aura/weekly_SAR_mosaic/

• Contains 8 weeks of Sentinel-1 data (weeks 26-33, 2025)
• VV, VH bands in linear scale, dB scale, and filtered versions
• Field boundaries from: ../../../pivot.geojson

Generated Outputs

Reports are generated in: ../../../output/

• Interactive_SAR_Report.html - Main interactive report
• Other test outputs

Usage

To generate the main interactive report:

source("generate_sar_report.R")

Or run directly:

rmarkdown::render("Interactive_SAR_Report.Rmd", output_file = "../../../output/Interactive_SAR_Report.html")

Features

• ✅ Interactive VV/VH backscatter maps
• ✅ Radar Vegetation Index (RVI) calculation and mapping
• ✅ Static RGB temporal composite
• ✅ Change detection analysis
• ✅ Time series plots
• ✅ Field boundary integration with popups
• 🔄 Interactive RGB composite (in progress)

Created: August 21, 2025 Author: Timon (with GitHub Copilot)